The screenwriter and actor is determined to stay in shape so has
spoken to his fitness fanatic fiancee, Jennifer Aniston, about
setting up a fully-equipped workout room in their new house.

"He already works out every day for 90 minutes. Justin wants to
have his dream gym at their house. He's even thinking about hiring
a valet to coordinate it all," a source told America's OK!
magazine.

Justin and Jennifer take care of themselves and the actress
recently revealed they enjoyed spa treatments together on a
post-Christmas vacation to Mexico with friends John Krasinski and
his wife Emily Blunt, and Jimmy Kimmel and his fiancée Molly
McNearney.

Showing off their holiday snaps on Jimmy's talk show, Jennifer
said: "All of you boys were secure enough in your masculinity to
join the women on spa day. So the girls had massages, whilst the
men were having manicures and pedicures."